摘要:
An improved method and device for performing anti-tachycardia pacing (ATP) to convert a ventricular tachycardia (VT) to normal sinus rhythm. Pairs of pacing/sensing electrodes are placed in or on each of the left and right ventricles. Each pair of electrodes is shorted together to produce unipolar electrodes that are used for ATP.
摘要:
Improved methods and devices perform anti-tachycardia pacing (ATP) to convert a ventricular tachycardia (VT) to normal sinus rhythm. In one embodiment of the invention bi-ventricular (BV) ATP is employed. In this embodiment the right ventricle and left ventricle of a patient's heart are independently paced based on signals sensed in each chamber.
摘要:
An improved method and device for performing anti-tachycardia pacing (ATP) to convert a ventricular tachycardia (VT) to normal sinus rhythm. Pacing/sensing electrodes are implanted in or on the left and right ventricles of a patient's heart. After a VT is detected a determination is made based on the shape of the electrogram signal of the VT. One of a plurality of time offsets for pacing pulses of the left and right ventricles is selected based on the signal shape and ATP is performed by pacing both the left and right ventricles with the time offset between pulses in the respective ventricles.
摘要:
An improved method and device for performing anti-tachycardia pacing (ATP) to convert a ventricular tachycardia (VT) to normal sinus rhythm. Pairs of pacing/sensing electrodes are placed in or on each of the left and right ventricles. Each pair of electrodes is shorted together to produce unipolar electrodes that are used for ATP.
摘要:
Improved methods and devices for performing anti-tachycardia pacing (ATP) to convert a ventricular tachycardia (VT) to normal sinus rhythm. In one embodiment one of a plurality of pacing configurations are selected for performing ATP. The selection can be based on the morphology of a signal indicative of the tachycardia.
摘要:
A method and device for performing anti-tachycardia pacing (ATP) to convert a ventricular tachycardia (VT) to normal sinus rhythm. Pairs of pacing/sensing electrodes are placed in or on each of the left and right ventricles. A determination is made whether a reentrant loop responsible for the VT is closer to one or the other of the pacing/sensing electrode pairs. ATP is performed with the pair of electrodes closest to the reentrant loop.
摘要:
In one implementation, a failsafe method for implantable satellite pacemaker pacing is provided, which includes pacing with a satellite pacemaker and monitoring for a local pacing pulse with an other satellite pacemaker. This implementation further includes, pacing with a surrogate satellite pacemaker if the local pacing pulse is not detected by the other satellite pacemaker. Certain implementations may include transmitting a wireless signal from the other satellite pacemaker to a master pacemaker if the local pacing pulse is not detected by the other satellite pacemaker and using the master pacemaker to select the surrogate satellite pacemaker. Certain implementations may include monitoring for the local pacing pulse with a plurality of satellite and causing the plurality of satellite pacemakers to select the surrogate satellite pacemaker.
摘要:
An ICD system and method for its use which will detect the presence of sensing artifacts caused by lead conductor fracture, lead insulation failure or connector port fluid penetration. When such a failure results in an incorrect detection of a tachyarrhythmia, the presence of sensing artifacts or noise is noted and charging of high voltage capacitors and/or delivery of high voltage therapy is avoided. The system of the invention includes at least two pairs of sensing electrodes which provide two distinct electrogram signals to the sensing and analysis circuitry of a pulse generator. Each signal is analyzed for heart rate. The rates are compared and if the rates detected are significantly different therapy is not delivered to the patient. The sensing electrode pairs may include four independent electrodes or there may be one electrode in common with each sensing pair. In an alternative embodiment, the two signals are compared by performing a correlation analysis.
摘要:
Intrapericardial access is provided by clamping the wall of the pericardium between elongate jaw elements carrying axially aligned tubular guides and passing a guide wire through the guides and the pericardial tissue therebetween. In the preferred embodiment the jaw elements include interengageable ratchets for holding the elements in clamping engagement with the wall of the pericardium and aligned pointed extensions for piercing the pericardial tissue clamped between the elements. Further intrapericardial access is provided by an additional tubular guide carried by the jaw element intended to be disposed in the pericardium during placement of the guide wire.
摘要:
A communication device for an implantable medical device may include: an input/output interface configured to communicate with a wireless communication device; a communication interface configured to communicate with a remote system; and a processor configured to perform an analysis of data received from the wireless communication device via the input/output interface and associated with the implantable medical device. The communication device may include a user interface configured to receive data input by a user. A communication system may include a wireless communication device and the aforementioned communication device. A communication method for an implantable medical device may include: providing a communication device that is configured to communicate with a wireless communication device, to communicate with a remote system and to perform an analysis of data; communicating data associated with an implantable medical device from a wireless device to the communication device; and analyzing the received data at the communication device.